Environmental factors related to the vegetational variation of a natural grassland

Detalhes bibliográficos
Autor(a) principal: Pillar, Valerio De Patta
Data de Publicação: 1992
Outros Autores: Jacques, Aino Victor Avila, Boldrini, Ilsi I.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/3746
Resumo: In this work the relationships between vegetation structure and environmental factors were studied. In a 30-ha natural grassland, 60 quadrats (0,25 m2) located on topographic gradients at each change in vegetation, were evaluated in terms of environmental factors and cover-abundance of species. Identification of community and species groups were done by using classification and ordination techniques. The community type Eleocharis-Centella occurs at lower and moister sites, Desmodium Axonopus-Paspalum and Baccharis-Andropogon occur at medium moisture, and Facelis-Paspalum, Eryngium and Arista-Borreria-Paspalum occur at dryer sites. In addition, dispersion profiles of species in relation to environmental factors were analysed. Hypotheses on vegetation succession due to changes in the environmental conditions were generated.
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spelling Environmental factors related to the vegetational variation of a natural grasslandFatores de ambiente relacionados à variação da vegetação de um campo naturalvegetation structure; topographic gradients; species of pastures; pasture communitiesestrutura da vegetação; gradientes topográficos; espécies de pastagens; tipos de comunidadesIn this work the relationships between vegetation structure and environmental factors were studied. In a 30-ha natural grassland, 60 quadrats (0,25 m2) located on topographic gradients at each change in vegetation, were evaluated in terms of environmental factors and cover-abundance of species. Identification of community and species groups were done by using classification and ordination techniques. The community type Eleocharis-Centella occurs at lower and moister sites, Desmodium Axonopus-Paspalum and Baccharis-Andropogon occur at medium moisture, and Facelis-Paspalum, Eryngium and Arista-Borreria-Paspalum occur at dryer sites. In addition, dispersion profiles of species in relation to environmental factors were analysed. Hypotheses on vegetation succession due to changes in the environmental conditions were generated.Neste trabalho estudam-se as relações entre estrutura da vegetação e fatores de ambiente. Em 30 ha de campo, 60 quadrados de 0,25 m2, locados ao longo de gradientes topográficos a cada mudanca notada na vegetação, foram avaliados quanto a fatores de ambiente e abundância-cobertura de espécies. Através de técnicas de classificação e ordenação foram identificados tipos de comunidades e grupos de espécies. O tipo de comunidade Eleocharis-Centella ocorre em campo uliginoso; Desmodium-Axonopus-Paspalum e Baccharis Andropogon ocorrem em umidade intermediária, e Facelis-Paspalum, Eryngium e Aristida-Borreria-Paspalum, em locais mais secos. As análises foram complementadas pelo estudo de perfis de dispersão de espécies e grupos de espécies em relação a variáveis de ambiente. Foram elaboradas hipóteses de sucessão decorrente de variação de ambiente, com base nos resultados.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPillar, Valerio De PattaJacques, Aino Victor AvilaBoldrini, Ilsi I.1992-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/3746Pesquisa Agropecuaria Brasileira; v.27, n.8, ago. 1992; 1089-1101Pesquisa Agropecuária Brasileira; v.27, n.8, ago. 1992; 1089-11011678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/3746/1037info:eu-repo/semantics/openAccess2011-08-23T13:32:06Zoai:ojs.seer.sct.embrapa.br:article/3746Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2011-08-23T13:32:06Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Environmental factors related to the vegetational variation of a natural grassland
Fatores de ambiente relacionados à variação da vegetação de um campo natural
title Environmental factors related to the vegetational variation of a natural grassland
spellingShingle Environmental factors related to the vegetational variation of a natural grassland
Pillar, Valerio De Patta
vegetation structure; topographic gradients; species of pastures; pasture communities
estrutura da vegetação; gradientes topográficos; espécies de pastagens; tipos de comunidades
title_short Environmental factors related to the vegetational variation of a natural grassland
title_full Environmental factors related to the vegetational variation of a natural grassland
title_fullStr Environmental factors related to the vegetational variation of a natural grassland
title_full_unstemmed Environmental factors related to the vegetational variation of a natural grassland
title_sort Environmental factors related to the vegetational variation of a natural grassland
author Pillar, Valerio De Patta
author_facet Pillar, Valerio De Patta
Jacques, Aino Victor Avila
Boldrini, Ilsi I.
author_role author
author2 Jacques, Aino Victor Avila
Boldrini, Ilsi I.
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Pillar, Valerio De Patta
Jacques, Aino Victor Avila
Boldrini, Ilsi I.
dc.subject.por.fl_str_mv vegetation structure; topographic gradients; species of pastures; pasture communities
estrutura da vegetação; gradientes topográficos; espécies de pastagens; tipos de comunidades
topic vegetation structure; topographic gradients; species of pastures; pasture communities
estrutura da vegetação; gradientes topográficos; espécies de pastagens; tipos de comunidades
description In this work the relationships between vegetation structure and environmental factors were studied. In a 30-ha natural grassland, 60 quadrats (0,25 m2) located on topographic gradients at each change in vegetation, were evaluated in terms of environmental factors and cover-abundance of species. Identification of community and species groups were done by using classification and ordination techniques. The community type Eleocharis-Centella occurs at lower and moister sites, Desmodium Axonopus-Paspalum and Baccharis-Andropogon occur at medium moisture, and Facelis-Paspalum, Eryngium and Arista-Borreria-Paspalum occur at dryer sites. In addition, dispersion profiles of species in relation to environmental factors were analysed. Hypotheses on vegetation succession due to changes in the environmental conditions were generated.
publishDate 1992
dc.date.none.fl_str_mv 1992-08-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/3746
url https://seer.sct.embrapa.br/index.php/pab/article/view/3746
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/3746/1037
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.27, n.8, ago. 1992; 1089-1101
Pesquisa Agropecuária Brasileira; v.27, n.8, ago. 1992; 1089-1101
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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